فهرست مطالب ارشیا بادی

The Covid-19 outbreak crisis in 2019 ushered in a new chapter in the development of virtual communication systems. Social networks can be considered one of the most successful tools in the field of information technology which always plays an important role in such situations. Availability, low cost, high reliability, popularity, and scalability are some of the key features of social networks that make them very instrumental in telemedicine development.

In this research, a new cycle in telemedicine systems based on virtual social networks, through the agile development method, has been built up; so that the processes of prevention, identification, diagnosis, and treatment would be efficiently followed, using a social network with a robot-making platform for easy scalability.

 Considering the effects of events such as the Covid-19 pandemic, social networking platforms can be used as practical tools for screening, prevention, treatment, and treatment, due to their accessibility. To reduce the psychological burden on society in acute and special situations, these platforms can be adopted as a strategy for virtual therapy by healthcare staff.

The possibility of creating messaging platforms and developing interactive robots are among the advantages of social networks. This method is easy to develop and low-cost. Thus, a dynamic relationship with users through the possibility of telemedicine, acquired from messaging social networks, can be established.

In this article, we take a new approach to simulating and modeling the dynamic system of foreign trade using the theory of control and system engineering. First, we examine the dynamic model of government budget, imports, domestic production, and then by designing a controller based on determining the amount of imports by the government to control the amount of tariffs to support domestic production, finally simulating the model in the form of Different scenarios are discussed. Various conditions in the field of foreign trade require a proper analysis and understanding of the performance of the executive arms of the government in this important economic field. Therefore, with a common perspective in the fields of engineering and economics, we have analyzed the situation. The results of this model indicate that the variable customs tariff is a very important control to support domestic production, if this tool is not used properly, it can act as an obstacle to the growth of domestic production.

In this paper, a new autopilot  is designed using backstepping adaptive second-order sliding mode.Autopilot designed is a good result  against uncertainty and perturbations. It also ensures convergence limited time, Reduce chattering, increased control accuracy and the need to derive the sliding surface of the other features of this method of control. One feature of this method is that comparative gains that have poor information uncertainty and uncertainty is implemented. Autopilot designed both the exterior and interior have been included for each section, Designed for each section in a similar way. The simulation results show that the reference signal on autopilot designed with adaptive backstepping second-order- sliding mode using super Twisting  algorithm compared to backstepping, sliding mode first order, adaptive backstepping first-order sliding mode tracking is faster and stronger.